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如何用万用表测晶闸管好坏？

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It takes ____________ to design and engineer a car, from the first sketches and until it hits the road.

A. a few months
B. a few years
C. a few days
D. a few hours

At Ford's Cologne plant, they produce a Fiesta every ______ seconds.

A. 92
B. 94
C. 86
D. 88

It is looking with ____________ to get the best fit of the door to the vehicle.

A. vernier calipers
B. computers
C. T-squares
D. laser lines

公共建筑高度大于（）米为高层建筑，大于（）米为超高层建筑。

A. 7，24
B. 24,50
C. 24,100
D. 50,100